mirror of
https://github.com/VectorCamp/vectorscan.git
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90c0ba195b
* Suppress clang warnings caused by boost headers * Make binutils selectable via environment variables Some build environments specify what tools to use via environment variables. e.g. NM could be 'x86_64-unknown-linux-gnu-nm' when cross-compiling * Use llvm-nm friendly non-short format value LLVM's nm implementaion (llvm-nm) wants the entire string to match. It doesn't allow just 'p' it wants 'posix'. - https://github.com/llvm/llvm-project/blob/llvmorg-21.1.3/llvm/tools/llvm-nm/llvm-nm.cpp#L2435-L2448 The nm implementations from GNU binutils and FreeBSD parse the format argument value only by looking at the first character. They are accept both 'p' and 'posix'. - https://github.com/bminor/binutils-gdb/blob/binutils-2_45/binutils/nm.c#L410-L438 - https://github.com/freebsd/freebsd-src/blob/release/14.3.0/contrib/elftoolchain/nm/nm.c#L506-L529
40 lines
1.2 KiB
Bash
Executable File
40 lines
1.2 KiB
Bash
Executable File
#!/bin/sh -e
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# This is used for renaming symbols for the fat runtime, don't call directly
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# TODO: make this a lot less fragile!
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cleanup () {
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rm -f ${SYMSFILE} ${KEEPSYMS}
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}
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NM="${NM:-nm}"
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OBJCOPY="${OBJCOPY:-objcopy}"
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PREFIX=$1
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KEEPSYMS_IN=$2
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shift 2
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# $@ contains the actual build command
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OUT=$(echo "$@" | rev | cut -d ' ' -f 2- | rev | sed 's/.* -o \(.*\.o\).*/\1/')
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trap cleanup INT QUIT EXIT
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SYMSFILE=$(mktemp -p /tmp ${PREFIX}_rename.syms.XXXXX)
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KEEPSYMS=$(mktemp -p /tmp keep.syms.XXXXX)
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# find the libc used by gcc
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LIBC_SO=$("$@" --print-file-name=libc.so.6)
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NM_FLAG="-f"
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if [ `uname` = "FreeBSD" ]; then
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# for freebsd, we will specify the name,
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# we will leave it work as is in linux
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LIBC_SO=/lib/libc.so.7
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# also, in BSD, the nm flag -F corresponds to the -f flag in linux.
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NM_FLAG="-F"
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fi
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cp ${KEEPSYMS_IN} ${KEEPSYMS}
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# get all symbols from libc and turn them into patterns
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${NM} ${NM_FLAG} posix -g -D ${LIBC_SO} | sed 's/\([^ @]*\).*/^\1$/' >> ${KEEPSYMS}
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# build the object
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"$@"
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# rename the symbols in the object
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${NM} ${NM_FLAG} posix -g ${OUT} | cut -f1 -d' ' | grep -v -f ${KEEPSYMS} | sed -e "s/\(.*\)/\1\ ${PREFIX}_\1/" >> ${SYMSFILE}
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if test -s ${SYMSFILE}
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then
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${OBJCOPY} --redefine-syms=${SYMSFILE} ${OUT}
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fi
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